Pump



Feb; 23 1926.

E. GRAY PUMP Filed Sept. 28, 1925 i z gvajgnue'nl'oc Patented Feb. 23,1926.

UNITED STATES 1,573,823 PATENT ()FFICE.

ELLSWORTH GRAY, F HOUSTON, TEXAS.

PUMP.

Application filed September 28, 1925. Serial No. 59,068.

To all whom it may concern:

Be it known that I, ELLSWORTH GRAY, a citize of the, United States,residing at Houst 11, Harris County, Texas, have invented a certain newand useful Improve-- ment in Pumps, of which/the following is a a pumpin which no standing valve at the in a pump barrel adapted to operalower end of thevpump barrel is necessary. It is also desired to providea pump which, when either the plunger or the tubing is withdrawn fromthe hole, will allow the fluid to drain away from the tubing as it israised.

It is also an object to so arrange the construction of the pump plungerand the pump barrel that no provision for avoiding accumulation of gasin the pump barrel need be made. Other objects lie in the simplicity ofthe construction whereby it is made economical to manufacture andoperate.

Referring to the drawing herewith, Figs. 1 and 2 show the upper andlower ends respectively of a pump plunger embodying my invention.- Saidplunger bein shown therewith, 'part of the plunger being shown inelevation. Y Figs. 3 and 4 are'similar upper and'lower sectional viewsof a pump barrel showing the plunger therein, the parts being shown inaiposition difierent from that shown in Figs. 1 and 2'. Like numerals ofreference are employed to designate like parts in all the view A .pumpbarrel 1 is shown nected within a pump tubing 2 at its upper end andextending downwardly a suitable 1 distance therefrom-and having itslower end closed, as shown at 3. The pump barrel 1 is madein twosections, the lower section 4 being connected with the upper section by.means of a special coupling 5. This coupling-engages with the twosections of the piimp barrelat its upper and lower ends and has betweenthese two connecting points an opening or series of openings (1 to allowthe entrance of liquid to the barrel The pump plunger is. providedat'its upper end with a valve cage 7, the upper end of whichis'threadedat -8 for engagement with the sucker rod 9.. The valve cageis of ordinary construction, having a valve seat as being conr 10therein in which is placed a ball valve 11. i

The valve cage is connected to a short nipple 12 which is threaded atits lower end for connection with the upper head 13 of the body of theplunger. Upon the nipple 12 are spaced a series of cups l4 spaced apartby spacing sleeves 15. This construction is the ordinary type of packingcup arrangement ordinarily used in pump plungers and need not be furtherdescribed. The body 16 of the pump plunger is elongated so as to spacethe lower end 17 a predetermined distance from the cups at the upper endthereof. The said lower head 17 is enlarged as shown in Figs. 2 and 4and the lower end is again reduced in diameter, thus leaving adownwardly tapered shoulder 18 thereon. Below the shoulder the reducedportion 20 is provided with longitudinal slots 21 therein adjacent theshoulder to allow the inlet of fluid to the central passage 22 throughthe slots. The lower end of the reduced portion 20 [is threaded forengagement with a nut 23, the upper end of WlllCh provides a shoulder 24to limit the downward movement of the slidable valve 25.

The valve 25 is slidable on the reduced portion 20 between the twoshoulders 18 and 24. It comprises a sleeve of metal having a fiarmgrecess 26 in the upper end to fit against the tapered shoulder 18. Ithas a close sliding fit over the piston barrel 20 and has on its outerface a series of packing cups 27. These cups are of leather or othercomposition held in place on the outer face of the valve by beingclamped between a nut 28 and the spacing sleeve 29 and the body of thevalve.

The operation of the valve is exceedingly simple. The openings 6 in thepump barrel which allow the inlet for the liquid is arranged to liebetween the upper and lower ends of the piston .during the operationthereof, and on the downward stroke the upper packing means 14 will notpass this opening and on an upward stroke the lower valvf member 25 willalso not pass the opening. Figs. 1 and 2 show the position of the partson the upward stroke of the plunger. The valve 11 will be seated on thisstroke and the packing 'means 14 and 27 will exert a suction effectiveupon the space below the plunger. The valve will dro and be seated upona shoulder 24 leaving tie openlngs 21. free. The suction will therefore.draw the oil in through the opening 6 in, the barrel and through theopenings 21 in the plunger to the space below the plunger. On thedownward stroke the oil in the space below the plunger will be preventedfrom passing out through the openings 21 by the valve which will bethrown'into position shown in Fig. 4, closing the openings 21, and theoil will thereby be forced upwardly through the passage 22 in theplunger raising the Valve 11 and passing on upwardly into the pumpbarrel. The friction of the valve 25 with the pump barrelwill cause it'to stay in any one position therein except when forced fromthatposition by contact with the shoulders 18 0e24,. It will be] noted thatthis pumping action is exceedingly simple. No standingvalvc is requiredand the working parts may all be withdrawn from the pump barrel when thesucker rod and plunger are removed. It will be seen on reference to Fig.1 that the tubing 2 is I of slightly larger diameter than the pumpbarrel. Therefore, when the plunger is withdrawn the fluid above theplunger will find a passage downwardly past the plunger as soon as itenters the tubing. Also when the tubing is then to be withdrawn theopening 6 will allow the liquid in the barrel to flow out as the tubiiigis raised, thus d ver coming the usual difficulty bf handling'the tubingwhile it is full of oil. Another advantage in this type of plunger liesin the manner in which gas is prevented from interfering with theoperation of the pump. No gas anchor or other similar device'isnecessary. If any gas from-the well passes through the openiigg 6, itwill'tend torise upwardly in the pump barrel to fill the. space belowthe packing 14:. On the downward stroke of the plunger this'gas willagain be forced downwardly to the opening and there escape. The'furtherad,- antages in the simplicity of construction and ease of operationwill be apparent to those skilled in the art. I

WVhat I claim as new and desire to .pro-

" tect by Letters Patent is:

W 1. In a pump a pump barrel closed at its lower end and having alaterah opening thereto'between its ends, a pump plunger adapted toreciprocate in said pump barrel, packing means on said plunger abovesaid opening, said plunger having openings therein adjacent tlTelower'end, valve sleeve slidable on said plunger, means to limit thesliding of said valve and a valve Zit'the upper "end of said plunger.

2. In apump a pump barrel closed at its 'lower endand having alaterals-opening between itsends, a pump plunger adapted to reciprocatein said pumpbarrel, packing means at theiipper end of said plunger,- an

. upwardly closing valve'above said'packing means, said plunger havlng accntral'passv said {passage adjacent the lower end thereof, a valvesleeve slidable on said plunger and adapted to close said openings andmeans to limit the movement of said valve sleeve on said plunger.

3. In a pump a pump barrel closed at its lower end, an elongated tubularplunger slidv able in said pump barrel and adapted to reciprocatetherein, packing means adjacent the upper end of said plunger, a valveabove said packing adapted to close the passage thereto, said plungerhaving a series of openings adjacent the lower end, means to close saidopenings on the downward stroke of said plunger, said pump barrel havinganopeiring intermediate its ,ends for the purpose described.

at. In a pump, a pump barrel in two sections, the lower sectionbengclosed at its lower end, a couplinghaving a lateral openwing thereinjoining saidsections, an elongated tubular pump plunger in said barrel,packing thereon above said coupling, a valve at the upper end thereof,said plunger being slotted adjacent the lower end, a valve slidable onsaid plunger to close said slots on. the downward stroke thereof, andpacking means on said valve.

5. In a pump, a pump barrel closed at its lower end and having anopening therein between its ends, a tubular plunger in said barrel,packing at the upper end of said plunger, an-upwardly opening valveabove said packing, a slidgng sleeve "valve on said plunger spaced belowsaid packing, there being openings in said plunger adapted to be aclosed by said sleeve valve, and means on said sleeve valve making aclose contact with said pump barreh I 6. In a pump, a pump barrel havinga lateral opening therein between its ends, means to prevent theentrance of liquid at the lower end of said barrel, a plunger in saidbarrel having a central channel therethrbugh' and lateral openings intosaid channel adjacent the lower end, a sliding valve on said plungeradapted to close said openings pm the downward strokeof said plunger,"and"suction meanson said plunger above the lower end thereof.

7. In apump, a* pump barrel having lateral openings therein between itsends, an elongated tubular-plunger lateral openings adjacent its lowerend, means slidable on said plunger and adapted'to fit against 120' saidpump barrel to close the said openings in said plunger on the downwardstroke thereof, and suction means on said plunger ELLSWORTH GRAY.

